TM10-3950-672-24-2
Incorrect Oil Pump
The capacity of the six cylinder oil pump is greater than
the four cylinder. If low or high pressure occurs after
changing the pump, verify that the correct pump was
used.
A - Four Cylinder
12.947mm [0.516 inch]
B - Six Cylinder
17.947mm [0.715 inch]
Oil Dilution
Caution
Diluted oil can cause severe engine damage.
Check the condition of the oil.
Thin, black oil is an indication of fuel in the oil.
Milky discoloration is an indication of coolant in the
oil.
Coolant in the oil can be caused by:
Cup plugs leaking.
Damaged cylinder head gasket.
Oil cooler element leaking.
Coolant Diluted Oil
Coolant leaking from the cup plugs in the cylinder block
water jacket will dilute the oil.
To check for leaks, remove the tappet cover and
pressurize the cooling system.
Coolant in the oil can also be caused by a damaged
cylinder head gasket.
Pressurize the cooling system to check for leaks. It may
be necessary to remove the oil pan to locate internal
leaks.
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